Which of the following has a maximum 'Cl-O' bond order?

1. ${\mathrm{ClO}}_3^{-}$

2. ${\mathrm{ClO}}_3$

3. ${\mathrm{ClO}}_2$

4. ${\mathrm{ClO}}_2^{-}$

The correct statement regarding $S{O}_2$ molecule is:

1. two $p\mathrm{\pi }-\mathrm{d\pi }$ bonds

2. molecules has 2 lone pair, 2$\sigma$ bonds and 2$\pi$ bonds

3. two $p\pi -p\pi$ bonds

4. one $p\pi -p\pi$ and one $p\mathrm{\pi }-\mathrm{d\pi }$ bond

Which of the following species contains equal number of $\mathrm{\sigma }$ and $\mathrm{\pi }$ bonds?

1. ${\mathrm{HCO}}_3^{-}$                                   

2. XeO₄

3. (CN)₂                                     

4. CH₂(CN)₂

Bond order of 1.5 is shown by

1. ${\mathrm{O}}_2^{+}$     

2. ${\mathrm{O}}_2^{-}$       

3. ${\mathrm{O}}_2^{2-}$     

4. O₂

What is the dominant intermolecular force on bond that must be overcome in converting

liquid CH₃OH to a gas?

1. Hydrogen bonding

2. Dipole-dipole interaction

3. Covalent bonds

4. London dispersion force

The correct order of electronegativity of hybrid orbitals of carbon is:

(1) sp>sp²<sp³             

(2) sp>sp²>sp³

(3) sp<sp²>sp³             

(4) sp<sp²<sp³

The incorrect order of lattice energy is :

$1. {\mathrm{AIF}}_3 > {\mathrm{MgF}}_2$
$2. {\mathrm{Li}}_3\mathrm{N} > {\mathrm{Li}}_2\mathrm{O}$
$3. \mathrm{NaCl} > \mathrm{LiF}$
$4. \mathrm{TiC} > \mathrm{ScN}$

Which atom can have more than eight valence electrons when it is forming covalent bonds ?

1. H

2. N

3. F

4. Cl

How many sp${}^2$ and sp-hybridised carbon atoms are present respectively in the following compound ?

1. 4, 2

2. 6, 0

3. 3, 3

4. 5, 1

${\mathrm{BF}}_3$ and ${\mathrm{NF}}_3$ both are covalent compounds but ${\mathrm{NF}}_3$ is polar whereas ${\mathrm{BF}}_3$ is non-polar. This is because :

1. Nitrogen atom is smaller than boron atom

2. N-F bond is more polar than B-F bond

3. NF${}_3$ is pyramidal whereas BF${}_3$ is planar triangular

4. BF${}_3$ is electron deficient whereas NF${}_3$ is not